Ship rudder/wing rudder random-rotation-ratio transmission gear

Abstract

The invention provides a boat helm / wing rudder discretional rotation angle transmission device. The invention consists of a main rudder blade, a main rudderpost, a photo-electricity encoder, a wing rudder leaf, a wing rudder shaft, a wing rudder driven gear, an internal bearing, a turbine sleeve shaft, an external bearing, a worm motor component, an external base seat, a gear bearing, a bottom seat, a main shaft drive gear, a middle supporting plate, an upper base seat, a harmonic reducer, an input shaft sleeve, an upper cover, a top motor supporting cover, a main shaft motor, a top encoder supporting cover, an encoder coupler, a photo-electricity encoder, a main shaft driven gear, a frame, etc. The invention enables the rotation of the wing rudder out of the restriction of the main rudder, namely, a small control surface which correspondingly and independently motions is added on the rudder to obviously improve the fluid power performance of the rudder, thus improving the course control performance of the rudder system. The invention has the advantages of reducing the energy consumption, improving the reliability and improving the navigability of the boat.

Description

(1) Technical field [0001] The invention relates to a propulsion device or a steering device of a ship. Specifically, it is a transmission device for joint control of ship rudder / wing rudder. (2) Background technology [0002] Two wings with the same aspect ratio and the same chord length, under the same angle of attack, the curved wing with camber has a larger lift coefficient than the wing with symmetrical section, because the effect of camber is equivalent to increasing Bigger angle of attack. The rudder / wing rudder is to divide the rudder into two parts, the main rudder and the wing rudder according to a certain ratio. Through the transmission device, an angle is formed between the main rudder and the wing rudder. In fact, it is to change a general streamlined rudder into a certain Cambered rudder. In a broad sense, wing rudders are equivalent to variable camber wings, which can provide greater lift at the same main rudder angle before the incoming flow separates, gre...

AI Technical Summary

Problems solved by technology

The common feature of these transmissions is that there is a fixed ratio of rotation angle between the main rudder and the wing rudder, that is, the rotation angle of the wing rudder is in a fixed ratio to the rotation angle of the main rudder, and the wing rudder cannot rotate freely without being restricted by the main rudder.

Compared with the common symmetrical section rudder, the rudder / wing rudder with fixed rotation angle ratio improves the power control performance, but due to the fixed rotation angle ratio, the wing rudder cannot rotate freely from the main rudder, which limits the improvement of ship control performance

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